HP MULTI JET FUSION (MJF) TECHNOLOGY

HP MJF 3D Printing
Services

Get custom nylon parts for functional prototypes, assembly testing, and small-batch production. TENGHUI offers PA12 and glass-fiber-reinforced nylon, with finishing and inspection support to meet your project requirements.

* Typical production lead time. Post-dyeing, vapor smoothing, and shipping time may apply.

Nylon Material Options PA12 & Glass-Filled Nylon
Batch Production Supportless High Packing Density
Inspected Before Shipping 100% Dimensional & Visual Check
GET A QUOTE Upload your CAD files for a custom quote within 24 hours.
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NDA Available on Request
HP MJF Precision White Nylon 3D Printing Material and Parts
Functional Nylon Parts
Capability Details
Printing Process HP Multi Jet Fusion (MJF)
Materials PA12 nylon and glass-fiber-reinforced nylon
Applications Functional prototypes, assembly components, fixtures, and small-batch production
Maximum Part Size Confirmed according to material, geometry, and build orientation
Dimensional Tolerances Confirmed after drawing and geometry review
Surface Finishing Bead blasting, black dyeing, and custom painting
Production Lead Time Confirmed according to material, quantity, and finishing requirements
Inspection Dimensional and visual checks against agreed requirements

HP MJF Printing Capabilities

TENGHUI reviews your design, material, and quantity to plan printing, finishing, and inspection. Our engineers ensure each batch meets functional strength and cosmetic expectations.

• 2D Drawing Guidelines: Include a 2D drawing for critical dimensions, mating features, and surface requirements.

• Quotation Confirmation: Material grade, achievable specifications, and production lead time are fully confirmed during quotation.

What Is HP Multi Jet Fusion 3D Printing?

Multi Jet Fusion (MJF) is a powder bed fusion technology developed by HP. It selectively applies fusing and detailing agents to polymer powder, then uses thermal energy to form each layer with balanced mechanical properties.

The surrounding powder naturally supports the parts during printing, so separate support structures are generally unnecessary. This allows complex organic shapes, internal channels, and efficient 3D nesting of multiple components within a single build.

MJF is an ideal, practical choice for functional nylon prototypes, assembly testing, manufacturing aids, and low-to-mid volume end-use parts without the upfront cost and lead time of mold tooling.

HP Multi Jet Fusion MJF 3D Printing Technology and Parts
Supportless Powder Fusion
Typical Lead Time 3 – 5 Working Days
Standard Tolerances ±0.2 mm or ±0.2%
Layer Thickness 80 μm (0.08 mm)
Support Requirement Self-Supporting (None)
Batch Production High Nesting Density

MJF 3D Printing Materials

Choose a material based on stiffness, toughness, dimensional requirements, and operating conditions.

PA12 Nylon

Balanced & Tough

A versatile choice for functional prototypes, housings, brackets, and assembly components. PA12 offers a useful balance of stiffness and toughness for general engineering applications.

Consider PA12 for fit checks, handling tests, and selected clips or snap-fit features. Performance depends on geometry and service conditions.

Glass-Fiber-Reinforced Nylon

High Stiffness & Stability

Suitable for housings, fixtures, and components requiring increased stiffness and dimensional stability.

Suitability for impact loads, thin features, and repeated flexing is reviewed against the selected material grade and application.

Unsure between standard PA12 and glass-filled nylon? Upload your CAD models and tell us your load conditions for technical selection advice.

Consult an Engineer

Advantages of HP MJF 3D Printing

Leverage powder-bed multi-agent fusion to achieve isotropic mechanical strength, cost-effective nesting, and injection-mold-like quality without tooling constraints.

01 Tooling-Free

Functional Parts Without Mold Tooling

Produce prototypes and selected production components directly from CAD data[cite: 14]. MJF can be a practical option while designs are evolving or quantities do not justify injection molding[cite: 14].

02 High Density

Efficient Batch Production

Multiple components can be nested within a build to share production capacity[cite: 14]. Unit cost depends on part size, geometry, quantity, and build utilization[cite: 14].

03 Supportless

Complex Geometry Without Separate Supports

Create intricate shapes without support structures attached to the part[cite: 14]. Hollow sections and internal channels still need suitable access for powder removal[cite: 14].

04 Engineering QA

Design Review & Quality Support

We review wall thickness, mating features, and cleaning access before production[cite: 14]. Parts are inspected against the agreed requirements before shipping[cite: 14].

Ready to produce functional nylon parts with HP MJF? Upload your CAD models for prompt nesting evaluation, DFM review, and quotation.

Get a Quote

HP MJF vs. SLS 3D Printing

MJF and selective laser sintering (SLS) are powder-based processes used to manufacture functional polymer parts. The right choice depends on material, appearance, geometry, quantity, and delivery requirements.

Comparison HP MJF SLS
Fusion Method Fusing agents and thermal energy Laser selectively sinters powder
Separate Support Structures Generally unnecessary Generally unnecessary
Typical PA12 Appearance Gray to charcoal before coloring Commonly white or off-white before coloring
Surface Texture Matte and textured before further finishing Matte and textured before further finishing
Common Applications Functional prototypes, fixtures, and batch production Functional prototypes, fixtures, and batch production
Material Selection Depends on equipment and qualified material grades Depends on equipment and qualified material grades
Cost and Lead Time Depend on geometry, quantity, material, and build utilization Depend on geometry, quantity, material, and build utilization

Unsure which powder bed fusion process fits your component? Send your design and application requirements to TENGHUI for help selecting a suitable process.

Select Process With Engineer

Surface Finishing for MJF Parts

Select a finish based on appearance, handling, and dimensional requirements. Available options depend on the selected material grade.

Bead Blasting

Matte Texture

Remove accessible residual powder and create a more uniform matte appearance. Parts retain a fine surface texture after blasting.

Black Dyeing

Uniform Dark Finish

Give compatible nylon parts a darker, more uniform appearance while largely retaining the printed texture. Final color depends on the material and geometry.

Custom Color Painting

RAL / Pantone Matched

Specify a RAL or Pantone reference and your preferred matte, satin, or gloss finish. Surface preparation, color matching, and acceptance requirements are agreed before production.

Engineering Note: Painting may affect critical dimensions and require additional lead time. Please clearly mark areas that must remain unpainted (masked) on your 2D drawings.

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HP MJF Design Guidelines

Design consideration directly affects part strength, cooling uniformity, and powder removal efficiency. Follow these engineering guidelines to get the most reliable nylon components.

Match Wall Thickness to the Application - HP MJF Nylon Parts
Rule 01 · Wall Thickness

Match Wall Thickness to the Application

Suitable wall thickness depends on material, feature size, unsupported length, and applied load. Large panels and structural features may need thicker sections or reinforcing ribs.

Avoid abrupt thickness changes where possible, and identify thin or delicate features for engineering review before production.

Provide Powder Removal Access - HP MJF Hollow Geometry Escape Holes
Rule 02 · Depowdering Ports

Provide Powder Removal Access

Hollow sections and internal channels need openings for cleaning. Opening size and location should account for cavity depth, internal bends, and access to internal surfaces.

Completely enclosed cavities can retain loose, un-fused powder and should be modified with at least two evacuation holes.

Allow Clearance for Assembly - Pre-assembled Moving Joints and Clearances
Rule 03 · Fits & Clearances

Allow Clearance for Assembly

Mating components and moving joints need suitable clearance. Required gaps depend on component geometry, contact area, build orientation, and cleaning access.

Provide a dimensioned drawing for critical fits and account for extra thickness added by paint or surface coating.

Define Cosmetic and Inspection Requirements - Quality Inspection and Appearance
Rule 04 · Quality & Tolerances

Define Cosmetic and Inspection Requirements

Mark visible cosmetic surfaces, datums, and critical dimensions on your 2D drawings.

Include color references, surface texture requirements, and any specific inspection documentation needed before production begins.

FAQ About HP MJF 3D Printing Services

1. What is the difference between MJF and SLS?

Both processes fuse polymer powder and generally do not require separate support structures. MJF uses fusing agents and thermal energy, while SLS uses a laser.

Material options, appearance, cost, and delivery should be compared for the specific project.

2. Should I choose PA12 or glass-fiber-reinforced nylon?

PA12 is a versatile starting point for general functional prototypes and assembly components. Glass-fiber-reinforced nylon is worth considering when greater stiffness and dimensional stability are priorities.

Share the expected loads, temperature, and use conditions so we can review the appropriate material.

3. What color are MJF parts?

Standard PA12 parts commonly have a gray to charcoal appearance. Glass-fiber-reinforced nylon may differ in color and texture.

Black dyeing and custom painting can be reviewed for the selected material and required appearance.

4. Are MJF parts waterproof or airtight?

Leak-tightness depends on material, wall thickness, geometry, processing, and operating conditions.

For parts that must contain liquid or gas, specify the medium, pressure, temperature, and leak-test requirements. Sealing performance must be evaluated for the application.

5. Can MJF replace injection molding?

MJF can be a practical option for prototypes, bridge production, and selected small-batch applications because it avoids mold tooling.

Injection molding may offer better economics at higher quantities or when specific materials and cosmetic finishes are required.

6. What tolerances and minimum wall thickness can you achieve?

Achievable dimensions and wall thickness depend on part size, geometry, material, and printing conditions.

Send your CAD model and a 2D drawing with critical dimensions so we can confirm feasibility before production.

7. How long does MJF production take?

Lead time depends on material, quantity, part size, build scheduling, finishing, and inspection requirements. Your quotation confirms the production schedule. Shipping time is additional.

Send us a message

If you have any questions or would like to book a session please contact us.

Send Us a Message

Once we receive your design files, our senior manufacturing engineers will manually perform a comprehensive DFM review and deliver an accurate, optimized quote within 24 hours.